51,593 Topics
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 | this is what i'm doing.. [code=c++]cout << "Value:" << endl; cin>>it; //it is int cout<<1; for (pos = v->begin(); pos != v->end(); pos++) { // pos is an iterator and v is a vector<int> if (*pos < it) { v2->push_back(*pos); cout << *pos << endl; } } cout<<2;[/code] This is … |
| | Hi friends, I am new to c++, just find this example from the book, but when i try to run in my visual studio,its gives problem. there is no error in the codes, it compile well, and in main screen ask the user to input the selection that they want, … |
| | Hello. Please if somebody has the time and willingness to do this program in C++ I would be very happy and grateful. [quote]Define a class Cubic that stores the coefficients of a polynomial of degree 3 in a dynamically allocated array of doubles. Supply the "big three" memory management functions. … |
| | Hello all, I'm trying to do this homework assignment but I keep getting an error when it compiles. The problem it has is in the startlotto function but I can't find it. It says that I have 2 errors: "error C2143: syntax error : missing ')' before ';'. "error C2059: … |
| | Hi, I was just wondering if there was any way to export the code I've written in Visual Studio to MS Word, by preserving all formatting. Since copy-paste doesn't keep the formatting, I need a way to transfer my original code to Word while keeping the formatting. And, yes, it …  |
| | Hello, Please disregard any small syntax errors I have made in this question, I’m trying to simplify a program that is many pages long. I have a program that has 2 parts, main.cpp and a form GUI.h. Both have functions that pass variables between themselves and I don't want to … |
| | Hello I have little problem with my code. Problem is iterator inner. How can i solve this? My code [code] map <string, map <string, string> > m; map <string, map <string, string> >::iterator outer; map <string, string>::iterator inner; m["John"]["VW"]="Golf"; inner=m.find("VW"); if(inner != m.end()) {cout<<inner->second<<endl;} [/code] Best Regards Danijel |
| | I am using Rice-Golumb encoding for image compression. Compression and decompression working perfectly on 12-bit greyscale image. The pixels are saved in a short int type array. But when compressing it is saved in a long int type buffer. My question is If the input is short int type then … |
| | Greetings, I have a array filled up with random value's (being positive and negative). What i wanne do is have a recursive version that counts -only- counts the postive values in that array. Recu version that counts all the elements (that works but is not quite yet what i seek) …  |
| | Hi I am trying to write a code to draw a sphere centered within a cube using openGL. Yesterday I had written it in such a way that the values of the side length of cube and dia of sphere are give in the code itself.That worked perfectly. Now I …  |
| | I have a C# dll and a C++ executable. I am using COM to communicate between the unmanaged and the managed layers using COM interop. Everything is fine except for one problem. I have one time consuming operation to be done within the C# dll. I need to notify the … |
| | Hi, If I static cast an object of a derived class to its base class, the object's virtual methods should be those of the base class. But this doesn't seem to be the case if I call such a virtual method via another method. The following is an extremely simplified … |
| | Hello everybody, I am currently developping a GUI interface game for windows XP. I am currently having difficulty changing the background of a EDIT box created with CreateWindowEx(). It's default background is white (which is the color I want). But the user is not supposed to be able to adjust … |
| | hi, i am facing problem at connecting c++ with oracle10g in redhat4 platform can you guide me to solve the problems. if you do that means i will really thank full to you. thank you at advance |
| | Hey all, stuck on abit of a problem. I am outputting afew strings to a text file. However when I check the text file it has been automatically split into 2 lines. Is there anyway to force the output to remain in one line or what is the reason for … |
| | I've made a Circular List and I need help implementing a simple memory management. It's the first time I'm doing this so I really have no idea where to start. What I want to do is pre-allocate X amount of Nodes that I can use for my list. Only when … |
| | [CODE] //************************************************************************************ //function playagain(); //parameters char cAns //resets game variables and board or exits game //************************************************************************************ void playagain(char cAns) { cout<<"would you like to play again?(y/n)"<<endl;//function call depending of the choice of the player cin>>cAns;//sts value to variable do { iTotalMoves=0;//resets # of moves ResetBoard();//resets game array cPlayerSymbol='a';//resets game char … |
| | For the following function can one of you guys take a look and see if what I have at the bottom is correct.. [CODE] void f(char ch) { if (('A' <= ch) && (ch <= 'H')) { f(ch - 1); cout << ch; } else cout << endl; } [/CODE] … |
| | I figured it out. To return an array you need to write your function as so [CODE] int *foo() {} [/CODE] |
| | Good day my masters first let me start by saying that i am a complete novice to c++ programming. i got myself into some trouble while debugging a win32 program in 2008 V.studio. with this code line(with similar lines anyway): ::MessageBox (wndhnd, "Error!", "Exception Occured", MB_ICONINFORMATION | MB_OK); Here's the … |
| | I am attempting to read binary data from a server using the Winsock2 API. The following is the code I am using to receive the data. The data is received but doesn't match what it should be. I have tested this by entering the url in my browser and comparing … |
| | #include <mysql.h> and [code]//try to make connection to database MYSQL *connection, mysql; MYSQL_RES *result; MYSQL_ROW row; int query_state; mysql_init(&mysql); connection = mysql_real_connect(&mysql,"http://1.1.1.1","user","password","database name",0,0,0); if (connection != NULL) { cout << "database connected \n"; }[/code] this code gives me 1>main.obj : error LNK2028: unresolved token (0A000294) "extern "C" struct st_mysql * … |
| | Hello all I've got a question. I have a datagridview control with autocomplete features with it. And was wondering if it would be possible to add 'Tooltips' to the suggested entry. What I'm trying to accomplish is what Visual Studio has done with their intellisense/auto complete feature. For example when … |
| | Hi, I was wondering if the compiler Visual C++ is smart enough to optimize code like this: [CODE=C++]string temp = "abcd"; string temp2 = "hahaha"; string temp3 = temp + temp2;[/CODE] "temp + temp2" can be replaced by "abcdhahaha" [CODE=C++]vector<char> alphabet; for (char i = 'a'; i <= 'z'; i++) … |
| | Hi, I am trying to convert a single wchar_t to uppercase. In theory it should work as shown below, in practice it does not. I have no idea what I am doing wrong. Any ideas? Output is: T T ? ? [CODE] #include <locale> #include <string> int main ( ) … |
| | What is a pre-processor macro and how is it processed by the C++ system? Demonstrate a potential problem with this approach by referring to the macro [CODE]#define SQR(t) t*t[/CODE] what is wrong here... besides the fact that if you put a type that cant use the * operator you'll get …  |
| | Hi everyone, can you help me please with then following?? a)The C++ Standard Template Library (STL) contains a number of container data types, explain with suitable examples the advantages these give to the programmer over a procedural language such as C. b)Demonstrate using suitable code the usage of the STL … |
| | Hi everyone, I'm running a c++ program using VS 2010. But during a debugging, the output DoS window disappears when a problem happens. How to stop the output window? I know the problem could be solved by using run-cmd-*.exe. But is there a direct method? I mean, by configuring VS … |
| | Hello all, I am trying to finish an assignment in my programming class and I can't seem to get this compilation to work... For some strange reason the program will not sum the elements in the array... It is only returning the first input that I enter... Any hints??? I … |
| | Past paper question from 2007: Source University of Cape Town - CSC2001F - 2007 Which of the two statements shown below will provide an lexicographical (alphabetic) string comparsion? why? [code=C++] char *mesg1 = "Hello", *mesg2 = "world"; string s1 = "Hello", s2 = "world"; if (s1 != s2) {...} // … |
| | Hallo all. Iv spent a lot of time browsing through the old threads and I cannot find a solution to my problem. Please help... I have to files H:\me.txt and H:\you.exe and I want to write a code in Turbo C++ to open these in a separate window, meaning I … |
| | Hello, I have a simple question. Look at the following code: [CODE]class ClsA { int * var1; ClsA(); ~ClsA(); } ClsA::ClsA(){ var1 = new int [10]; } ClsA::~ClsA{ delete [] var1; cout<<"Apel destructor"; } void funct(){ ClsA ** p = new ClsA * [10]; ..... delete [] p; }[/CODE] When … |
| | I am sorry to bother people with silly questions, But I have no choice. I have a statement unsigned short a=4000, current_word; current_word=a << 3; Then I have another statement unsigned long a=4000, current_word; current_word=a << 19; According to my knowledge they will contain the same value. Am I right? |
 | hi all... I am a student and but working as a php developer...my desire is be a good skillful Software Engineer. I am currently following php and java too. but my mind say try to learn C++ also.. ok good 01. How I start my C++ career. 02. What is … |
 | hey guys i am trying to do one level of undo ..however its not working correctly..it does display the text but x and y axis gets messed up..any help and suggestion be great thank you [CODE]void undo(pixeltype pixels[], int length, int option) { struct temp_pixels { int x; int y; … |
| | I'm trying to get the key being pressed in order to start an algorithm and afterwards move the mouse on the screen and perform some clicks. How can I achieve this when the console is in the taskbar ? I tried _getch() but it doesn't work while the console is … |
| | Hey Guys, Recently ive been developing a text editor when i came to stop. [ICODE]system("cls"); cout <<"\t\t-------------------------------------" <<endl; cout <<"\t\t| NEW FILE |" <<endl; cout <<"\t\t-------------------------------------" <<endl; cout <<"\t\t|Enter New File Name| "; getline(cin,createfile); cout <<"\t\t----------" <<endl; getline(cin,text);[/ICODE] here getline accepts code only until one press enter key How to … |
| | hello..i'm learning winsock programming in C/C++ and i need to use https connection for connecting to a server..could anyone tell me what does that mean and how do we implement it in a client program?? thanks |
| | Please help me solve this problem, I've spent 2 days to search for what error is but I can't!!! The operator + return error object though this object was still right before it is returned. Maybe it's because of the copy constructor but I find no doubt in its syntax... … |
| | Hi, I've been learning basic C++ for the past few days, and at the moment, I'm trying to make a basic 2-number, plus/minus/multiply/divide calculator. Here's what I have (it's complete). Basically I was wondering if anyone could recommend a quicker or shorter way of typing all of this out. Thanks …  |
| | Hi, I have a game that at the moment is a little like mario- a jump and run. I want to add a timer to my main funtion so that after 60 seconds or so the game ends and goes to a highscore table where you can enter your name … |
| | Ok, I'm probly going to sound like a bit of an idiot, but I'm new to the programming world. Whenever I attempt to run this program, I get a long list of error messages. //DATATYPE.CPP //Examples of variable declaration and //initialization. #include <iostream> main () { //declare a constant for … |
 | Hi guys: I am trying to run my makefile on my system. I am getting the following error [CODE]% make cc -c -O -I/Users/gcardonav/jpeg-6a -I/Users/gcardonav/cfitsio FITS2jpeg.c In file included from FITS2jpeg.c:26: jpegsubs.h:28:20: error: malloc.h: No such file or directory make: *** [FITS2jpeg.o] Error 1 %[/CODE] I do a search for … |
| | i have been following this tutorial on [URL="http://jnrdev.72dpiarmy.com/"]http://jnrdev.72dpiarmy.com/ [/URL]number 3. I am using SDL with visual C++ i want to add a timer to this code then after the timer has run out i want the game to go to a highscore table where you can enter your name if … |
| | Hello everybody, I would link to represent a graph with incidence lists. This picture is what I've thought about: [URL="http://img697.imageshack.us/img697/2640/incidence.jpg"]http://img697.imageshack.us/img697/2640/incidence.jpg[/URL] This is what I created: [CODE] #include <cstdlib> #include <iostream> using namespace std; class Edge; class Pointer; class Node { public: Node* nNext; Pointer* incList; char First; Node(char a) : … |
| | Can someone check my work to make sure I did the following correct... The array-based implementations of stacks in this section impose and upper limit on the max size that a stack may have. Write a member function full() for the stack class that returns true or false according to … |
| | Can someone please double check to make sure I have these right. Here are the instructions... Assume that q is a queue implemented as described using circular array with queueElement = char and capacity 5, and then ch is of type char. Show the values of myFront and myBack and … |
| | I am doing some stack exercises and just want to make sure I have the correct answers. Assume StackType is sent to int and STACK_CAPACITY is set to 5. Give the values of myTop and the contents of the array referred to by myArray in the stack s after the … |
| | Hi, I am making application where I need to repaint windows form where I display some variables. I used InvalidateRect(NULL,0,0); - now the form is refreshing but started to blink because I refresh whole area,and I dont need to refresh all the buttons and static text ,only area where I … |
| | I am trying to create my first library and I guess the dynamic library is the best suited, though I don't know the difference between the two. I am following this tutorial: [url]http://msdn.microsoft.com/en-us/library/ms235636.aspx[/url] My questions are: 1. So pretty much I make my header file and a respective cpp file … |
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